This page explains how Yu-Chan Chang (USATT# 92050)'s rating went from 1948 to 1950 at the Baton Rouge 2015 Fall Open held on - 31 Oct 2015. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.